/
server.go
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/
server.go
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// Copyright 2019 Google LLC All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package https
import (
"net/http"
"agones.dev/agones/pkg/util/runtime"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// tls is a http server interface to enable easier testing
type tls interface {
Close() error
ListenAndServeTLS(certFile, keyFile string) error
}
// Server is a HTTPs server that conforms to the runner interface
// we use in /cmd/controller, and has a public Mux that can be updated
// has a default 404 handler, to make discovery of k8s services a bit easier.
type Server struct {
logger *logrus.Entry
Mux *http.ServeMux
tls tls
certFile string
keyFile string
}
// NewServer returns a Server instance.
func NewServer(certFile, keyFile string) *Server {
mux := http.NewServeMux()
tls := &http.Server{
Addr: ":8081",
Handler: mux,
}
wh := &Server{
Mux: mux,
tls: tls,
certFile: certFile,
keyFile: keyFile,
}
wh.Mux.HandleFunc("/", wh.defaultHandler)
wh.logger = runtime.NewLoggerWithType(wh)
return wh
}
// Run runs the webhook server, starting a https listener.
// Will close the http server on stop channel close.
func (s *Server) Run(_ int, stop <-chan struct{}) error {
go func() {
<-stop
s.tls.Close() // nolint: errcheck,gosec
}()
s.logger.WithField("server", s).Infof("https server started")
err := s.tls.ListenAndServeTLS(s.certFile, s.keyFile)
if err == http.ErrServerClosed {
s.logger.WithError(err).Info("https server closed")
return nil
}
return errors.Wrap(err, "Could not listen on :8081")
}
// defaultHandler Handles all the HTTP requests
// useful for debugging requests
func (s *Server) defaultHandler(w http.ResponseWriter, r *http.Request) {
// "/" is the default health check used by APIServers
if r.URL.Path == "/" {
w.WriteHeader(http.StatusOK)
return
}
FourZeroFour(s.logger, w, r)
}